MS Seminar (Mathematics - String Theory)

Speaker: Janet Hung (Perimeter Institute)
Title: Holographic quantum liquids in 1+1 d
Date: Mon, Dec 07, 2009, 13:15 - 14:45
Place: Seminar Room at IPMU Prefab. B
Abstract: We will motivate the study of quantum liquids in 1+1d via AdS/CFT and look into a particular set up in string theory realized via intersecting D3 branes. We turn on a fundamental string density on the worldvolume. Unlike higher dimensional defects, a persistent dissipationless zero sound mode is found. The thermodynamic aspects of these models are considered carefully and certain subtleties with boundary terms are explained which are unique to 1+1 dimensions. Spectral functions of bosonic and fermionic fluctuations are also
considered and quasinormal modes are analysed. A prescription is given to compute spectral functions when there is mixing due to the worldvolume gauge field. We comment on the Luttinger conjecture in the light of our findings.